For the preparation of p-nitroiodobenzene from p-nitroaniline, the best method is

JEE Main Chemistry question

For the preparation of -nitroiodobenzene from -nitroaniline, the best method is

(A) followed by KICorrect
(B) followed by CuCN
(C) followed by
(D) followed by

Answer: (A)

Solution

-Nitroaniline is first diazotised with to give the corresponding diazonium salt. Treatment of this diazonium salt with potassium iodide then directly replaces with (no catalyst needed, since iodide is a good enough nucleophile/reductant

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Question ID VK-148091